Tyrod Taylor and Colt McCoy are two mobile quarterbacks that come to mind that Nebraska embarrassed. Granted it was pretty much Suh against McCoy in 2009, but Nebraska as a whole did an excellent job against Taylor at VaTech holding him to five yards on nine carries. We also did a pretty good job against Locker the first time around in 2010.
In 2008, Tyrod Taylor made us look like a fool. Furthermore, Colt McCoy does not count as a legitimate dual-threat quarterback, he counts as a quarterback that happened to not be too terrible at running when he had to. Locker is the same way, he's fast as balls but he's not a true runner - no shiftiness or moves, just straight-line speed.
We did do a good job against Taylor in 2009 though, so that's one point against and like....50 for, but hey, you've gotta start somewhere!